The symptoms of a dirty throttle body include rough idle, poor gas mileage, faulty CEL codes, stalling and poor acceleration. Poor gas mileage is the result of the vehicle's ECU, or computer, attempting to adjust the fuel mixture to compensate for throttle plates that are incapable of closing properly. Faulty CEL codes cause various sensor-related issues, such as an illuminated check engine light.Know More
A vehicle with a dirty throttle body experiences difficulty accelerating smoothly. Slowed and uneven acceleration is an indicator of a dirty throttle body. This automotive issue results in a hard gas pedal that requires more pressure to push down.
If the engine idles erratically or sputters when speeding up and slowing down, then the throttle body may require cleaning. Checking gas mileage is a way to diagnose a dirty throttle body. If a vehicle starts getting fewer miles to the gallon, then the throttle body requires cleaning.
The throttle body is a component of the air intake system, and a dirty throttle body can lead to air pollution. This issue leaves excess combustion products within the exhaust, which coats the inside of the throttle body. As a result, a dirty throttle body leads to poor performance and engine stalling.Learn more about Engine
Problems with acceleration, engine misfires, reduced fuel mileage, stalling and difficulties starting the vehicle are all possible symptoms of a bad crankshaft sensor, according to 1A Auto. A bad crankshaft sensor may also cause the vehicle to idle roughly or make the check engine light come on.Full Answer >
When condensation from water contaminates a gas tank, the most common symptoms are poor fuel economy, engine running rough, stalling or failing to start, and hydrostatic lock. Condensation inside a fuel tank or a leaky fuel filter can contaminate gas that has been stored too long.Full Answer >
A faulty fuel injector creates a number of different issues on an engine, including stalling, lower than average fuel economy, a vibrating engine, a rough idle or running too rich. Faulty injectors are tricky to diagnose because many of their symptoms mimic more common problems, such as a vacuum leak or bad spark plug.Full Answer >
The most common symptoms of a bad exhaust gas recirculation valve are rough or misfiring idle, detonation, stalling and hard starting. The EGR valve is a component of an automobile’s exhaust circulation system that reduces pollution-causing emissions.Full Answer >